Fuel — Roll-over Valves — Replacement

Published: Jan 29, 2020
Effective: Feb 12, 2020
Deadline: Feb 12, 2022

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of EC 175 B helicopters with affected roll-over valves must replace these parts within 880 flight hours or 24 months from 12 February 2020, whichever occurs first. From the effective date, installation of affected roll-over valves on any helicopter is prohibited. Maintenance teams should follow Airbus Helicopters Alert Service Bulletin EC175-28A004 for replacement instructions.

Summary

EASA Airworthiness Directive 2020-0015 is an airworthiness directive issued for Airbus Helicopters EC 175 B models. It addresses a manufacturing non-conformity in roll-over valves with part number 510397-4 that may cause fuel leakage during an aircraft roll-over or hard landing. The directive mandates replacement of affected roll-over valves to prevent potential post-impact fires.

What changed

This new airworthiness directive introduces a mandatory replacement of affected roll-over valves identified by specific part and serial numbers. It prohibits the installation of these affected parts on any EC 175 B helicopter from the effective date. The directive also provides compliance timelines for replacement based on helicopter group classification.

Why it matters

This directive is critical for aviation professionals as it addresses a safety risk that could lead to fuel leakage and post-impact fires, endangering occupants. Operators and maintenance organizations must ensure compliance to maintain airworthiness and avoid regulatory violations. The directive also impacts parts inventory management by restricting the use of affected roll-over valves.

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